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  #1  
Old 06-01-2020, 10:44 AM
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TRP-3 FTF AGAIN



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Anyone shooting RWS-R50 and having FTF? The case on the lower left is RWS showing a light strike. The case on the right is Midas + showing a deep strike which produces no FTF. I don`t think I have a headspace problem by the looks of the FP strike on the Midas +. I have fitted a new firing pin and installed a new FP spring in this rifle with no difference in strike depth on any brand of ammo. Does anyone know if a stronger FP spring is available for the 57-M. No joy at Cooper or J&P. EDIT: Just measured the rim thickness on Midas + .043.--- RWS .040.--- Eley Match .038. I get a better FP strike on Eley than I do on the RWS that has a thicker rim. I would guess that the RWS case has harder brass, thus the need for a stronger FP spring.
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Last edited by elohssa63; 06-01-2020 at 12:13 PM.
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  #2  
Old 06-01-2020, 01:01 PM
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Did you reshape the FP?
Looks like your footprint is inside the rim.
How many FTF's have you had?
Huge different if 1 in 1000 versus 1 per box.
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Old 06-01-2020, 03:56 PM
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Yes, I fitted a new firing pin and reshaped the tip. Last range session I had three FTF shooting about a box and a half of RWS. There is a noticeable difference in the FP strike on the Midas Plus as opposed to the RWS. My firing pin protrusion is to the front of the bolt face. The rim pocket in the bolt is .038, so I have enough FP protrusion. The only thing I can come up with causing light strikes on the R-50 is harder case brass. I do think a stronger FP spring would fix the problem. However, I have not found a source for a stronger FP spring.

Last edited by elohssa63; 06-01-2020 at 04:04 PM.
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  #4  
Old 06-01-2020, 06:59 PM
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My TRP3 doesn't like R-50, but loves Eley Match or Tenex when it comes to accuracy. I don't shoot R-50 anymore, but don't remember any problems. Then again, I have trouble remembering what I did last week! Shot the last of the R-50 with the 52E on a few USBR targets, it didn't care for it either when it comes to accuracy, I think it was a 238. I'm sure there are fine target rifles that absolutely love R-50, I just don't have one.....yet.
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Old 06-01-2020, 07:32 PM
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I get good groups with R-50 when it goes bang. However, my Cooper seems to like good lots of Eley Match and Tenex as well as Midas Plus. It doesn't seem like an ammo snob, but ignition has always been suspect with this rifle.
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Old 06-01-2020, 09:57 PM
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My experience is with a M57.
No FTF and while I am not using R50, I have been using Federal Match 922A which is a kissing cousin to the R50.
I have four rifles that have a preference for Remington Eley Match.
My ten/twenty-two prefers the Federal Match and a 1.17" ten-shot group at 100 yards is compelling.
PS. Just trying to hide the mention of another brand amongst friends!
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  #7  
Old 06-01-2020, 10:36 PM
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Quote:
Originally Posted by horseman2 View Post
My experience is with a M57.
No FTF and while I am not using R50, I have been using Federal Match 922A which is a kissing cousin to the R50.
I have four rifles that have a preference for Remington Eley Match.
My ten/twenty-two prefers the Federal Match and a 1.17" ten-shot group at 100 yards is compelling.
PS. Just trying to hide the mention of another brand amongst friends!
I have two bricks of the R-50. I'll see if my Smith model 41 likes it. Kinda expensive for silhouette ammo though.
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Old 06-04-2020, 10:29 AM
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My TRP-3 is factory stock and has not had any FTF with R-50, Eley or Lapua rounds.
Going back to Horseman2's comment, it looks like the FP strike is inside the rim.
Different ammo makes could be sensitive to that. Try going back to a Cooper factory firing pin to see if that resolves the issue with R-50.
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  #9  
Old 06-04-2020, 08:03 PM
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Thanks joet, I'll give that a try. How does your FP strike on the RWS case look compared to the strike on the Lapua case? There is a noticeable difference between the two with my rifle. I shot one IR 50/50 card today shooting Midas Plus. No FTF. Shot a 248 15X. Was clean until last two bulls. Minus one on 24 and 25. Pressure got to me. LOL. I should give up on the ammo chase and stick to Midas plus, but I'm always looking for that little bit extra.

Last edited by elohssa63; 06-04-2020 at 09:26 PM.
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  #10  
Old 06-05-2020, 08:15 AM
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Les, I have not noticed any difference in FP strike among various brands of ammo in my TRP-3. With that said, I have observed more lot-to-lot variation in R-50 than with Midas+ (accuracy). If you get a good lot of R-50 it will be very good. However, Midas+ seems to be more consistent. You may have gotten a lot of R-50 with hard brass. Attached are some photos of my strikes with R-50 and Eley Black (no Midas+ sorry). I suspect that the RWS roll mark may affect the rim hardness in this area because stamping the roll mark may work harden the brass. Also, the firing pin must strike the rim at the point that it is supported underneath by the case wall. That forms the "anvil" to provide the ignition. Good Luck.
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File Type: jpg Eley RWS Rim strike 004.JPG (52.8 KB, 76 views)
File Type: jpg 17Mach2 001.JPG (114.2 KB, 1 views)
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  #11  
Old 06-05-2020, 10:53 AM
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I does look like the headstamp on the RWS could interfere with ignition. I'll try shooting some RWS with a different firing pin next range session. Have to wait for tropical storm Christobal to clear the area this weekend.
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  #12  
Old 06-12-2020, 09:12 PM
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Shot a box of RWS yesterday with a different firing pin and had no FTF.
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